The present paper deals with the aging thermal creep of the reacting elastic concrete. In Part I of the Paper, the theoretical formulation and significance of the proposed unified constitutive model have been presented. This Part II of the Paper focuses on its empirical validation and practical relevance. Theoretical predictions for the creep, recovery and relaxation of hydrating concrete, young cement paste and leaching concrete subjected to different stress or strain histories have been found to be satisfactory. Different observed effects of ambient constant temperature on creep of concrete have been accurately predicted. Absence of any substantial effect of grade of concrete on creep coefficients has been confirmed. The proposed constitutive model is expected to be relevant for creep and durability design of concrete structures. Depending upon the environmental exposure conditions and ambient temperatures, different creep coefficients have been suggested for concrete. Possible areas of future theoretical and experimental research in this field have been identified.